Power-driven stapler



FIG. 1 is a right side elevational view of a power-driven stapler showing our new design, the left side elevational view being a mirror image thereof;

FIG. 2 is a front elevational view;

FIG. 3 is a rear elevational view;

FIG. 4 is a top plan view; and

FIG. 5 is a bottom plan view. 

The ornamental design for a power-driven stapler, substantially as shown and described. 